cya zero

[ethany]

I just opened my pool. It looks like shrek's swamp. I test cya and it is zero or so low it is not showing up on test. What would be my shock when its this low? The lowest number on cya/chlorine chart is 60

 

[JohnT]

Treat it like you don't have a SWCG for now until you can get some CYA in there.

 

[ethany]

how much bleach should I shock/add? Sorry but a little rusty at this and I am trying to do 50 things at once with the day off. Thanks

 

[RobbieH]

Follow "How to Shock Your Pool" pool-school/shocking_your_pool and use http://poolcalculator.com to determine what your levels need to be.

 

[Bama Rambler]

Shock level for zero CYA is 10 ppm FC. Don't be surprised if your CYA converted into ammonia and you'll need tons of chlorine to get rid of it.

 

[ethany]

ok thanks